Weiss, Noel S.
Oxford University Press, 1986
Buku Teks
Gerstman, B. Burt, author
Wiley-Blackwell, 2013
Buku Teks
Payne, James L., author
Lytton, 1975
Buku Teks
Robertson, Leon S., author
Oxford University Press, 1992
Buku Teks
edited by Barrie M. Margetts and Michael Nelson
Oxford University Press, 1991
Buku Teks